2022-23
- 6 teams
2021-22
- 17 teams
2020-21
- 25 teams
2019-20
- 10 teams
2018-19
- 10 teams
2017-18
- 7 teams
2016-17
- 3 teams
2015-16
- 2 teams
2014-15
- 2 teams
2013-14
- 2 teams
2012-13
- 4 teams
2011-12
- 3 teams
2010-11
- 3 teams
2009-10
- 4 teams
2008-09
- 2 teams
2007-08
- 3 teams
2000
- 1 team
1999
- 1 team
1998-99
- 2 teams
1998
- 1 team
1997-98
- 5 teams
1996-97
- 3 teams
1995-96
- 3 teams
1991
- 1 team
1990-91
- 2 teams
1989-90
- 2 teams
1983
- 1 team
1981-82
- 2 teams
1980-81
- 4 teams
1972-73
- 3 teams
1971-72
- 5 teams
